GTAC Observation Log

1. Date : 20/05/2017
2. Observation Sr. No. : 9408
3. Observer : Resmi Lekshmi
4. Observer's Email : l.resmi@gmail.com
5. Project Name : Nature of the persistent radio source associated with FRB121102
6. Project Code : 32_123
7. Operator(s) : Nilesh
8. Command File : /odisk/gtac/cmd/32_123/obs.cmd
9. LTA File : /gsbifrdata1/20may/32_123_20may2017.lta
10. LogFlag File : /odisk/online1/logflags/32_123.FLAGS.2, /odisk/online1/logflags/32_123.FLAGS.1, /odisk/online1/logflags/32_123.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1371 MHz ,RF2 : 1371 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON

GSB SETTINGS :

14. GSB Host : gsbm1_shivneri
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE
18. GSB Fstop : ON
19. GAIN EQ : ON
20. Stokes : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : OFF
23. ACQ BW : 33.333333 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 1371 1371 1320 1320 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
C01 : Low fringe.
C02 : Low fringe.
C14 : : Maintenance.
W04 : ABC time out.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 May 2017 09:00:00 - 20 May 2017 12:10:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :27

37. Comments (During Observations) :
08:55 : Started settings.
08:59 : Started scan on 3C147 for 15 min.
09:15 : Started command file.

10:30 : phase cal 0431+206 has GMRT Latitude ~=Declination and it's before transit, so phase cal replaced with 3C147, instead of changing antenna track.

10:00 : W03 taken for maintenance.
10:25 : C02 taken for maintenance.
10:36 : C02 released for observations.
11:20 : W04 released for observations.
11:52 : Stopped command file.
11:54 : Started scan on 3C147 for ~ 15 min.
12:09 : Stopped scan and observation closed.